Hello all you doubters, this is a product that is very new to the market, and there are only a few examples in the UK. Our skies are notoriously poor for most of the time, so it will take a while to get proper images.
We have some highly intelligent people on our side, who have the wit to be able to carefully examine the performance of this instrument. Physics works extremely well, and computer predictions of performance match the actual performace perfectly, as long as the optics are carefully made and mounted. This is my personal experience, and that of the select few who have been able to observe through these amazing instruments.
We have been asked as to why we use carbon fibre tubes, instead of aluminium. The answer is quite simple: as the sagitta of the objective lens is small, the effect of a 40 degree C change in temperature is a 0.35mm change in focal length. At 1525mm tube length, an aluminium tube would change by 1.3mm over the same temperature range, which if multiplied by 3 gives an actual change of 3.9mm - quite intolerable! Carbon fibre has an approximate cte of 1/10 that of aluminium (depending on the way it is made), giving a change in length of precisely that of the objective lens. Naturally, there is the bonus of strength, plus light weight.